Per Miller- he missed time for a bunch of odd reasons - personal matters, skin in infection and whatever else- I think that weighed on his overall performance but the quality of his ABs was still there. I can’t say that those issues won’t be there next year or that he’ll be ready for the big leagues in spring, but he’s the kind of infusion they need and Bohm’s the kind of chip to be creative with.
As for Harper, I don’t think the issue was that he was “swinging for the fences”, I think he was trying to make up for bat speed that used to be there. Hopefully it’s something he just needs to heal as opposed to loss from age.